--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6531942581 dns-udp-queries-received-ipv6: 1270190553 dns-tcp-queries-received-ipv4: 119536334 dns-tcp-queries-received-ipv6: 26406549 dns-udp-responses-sent-ipv4: 6419408290 dns-udp-responses-sent-ipv6: 1291358636 dns-tcp-responses-sent-ipv4: 114369027 dns-tcp-responses-sent-ipv6: 25354201